Jquery code:

var code = $('#code'),
     id = $('input[name=id]').val(),
     url = '<?php echo base_url() ?>mali_oglasi/mgl_check_paid';
     code.on('focusout', function(){
        var code_value = $(this).val();
        if(code_value.length != 16 ) {
            if ($('p[role=code_msg]').length != 0 ) $('p[role=code_msg]').remove() ;
            code.after('<p role=code_msg>Pogrešan kod je unešen.</p>');
        } else {
            if ($('p[role=code_msg]').length != 0 ) $('p[role=code_msg]').remove() ;
            $.post(url, {id : id, code : code_value}, function(data){
                if(data != 'TRUE'){
                    code.after('<p role=code_msg>Uneti kod je neispravan.</p>');
                } else {
                    code.after('<p role=code_msg>Status malog oglasa je promenjen.</p>');
                    code.after(create_image());
                    code.remove();
                }
        });
        }
     });

PHP (Codeigniter) code:

function mgl_check_paid()
    {
        $code = $this->input->post('code');
        $id = $this->input->post('id');
        echo ($this->mgl->mgl_check_paid($code, $id)) ? 'TRUE' : 'FALSE';
    }

Problem is following: When code is sent and if it is correct, PHP part will echo TRUE, and JS will execute ELSE part (after post), but for some reason it is not doing that (it is executing the first part of the statment)? What is wrong with this code?